Roadmap on the Way to Decommissioning
At the Fukushima Daiichi Nuclear Power Station, decommissioning work is being carried out based on the “Mid-and-Long-Term Roadmap towards the Decommissioning of TEPCO's Fukushima Daiichi Nuclear Power Station Units 1-4” adopted by the Inter-Ministerial Council for Contaminated Water, Treated Water and Decommissioning Issues of the National Government. The original roadmap adopted in December 2011 is subject to ongoing review, considering matters that become clarified at the site as the decommissioning work proceeds.
Milestones on the Mid- to Long-Term Roadmap
A target schedule clearly showing the state of progress
| Contaminated water measures | Reduce the volume of contaminated water to around 150m3/day *1 | During 2020 | |
|---|---|---|---|
| Reduce the volume of contaminated water to around 100msup>3/day *1 | During 2025 | ||
| Treatment of accumulated water | Complete treatment of water accumulated in buildings *2 | During 2020 (*2) | |
| Reduce water accumulated in reactor buildings to around half the amount at the end of 2020 | FY2022–2024 | ||
| Spent fuel removal | Complete fuel removal from Units 1 to 6 | During 2031 | |
| Complete installation of large cover over Unit 1 | Around FY2023 | ||
| Start fuel removal from Unit 1 *3 | FY2027–2028 | ||
| Start fuel removal from Unit 2 *3 | FY2024–2026 | ||
| Fuel debris retrieval | Start fuel debris retrieval from initial reactor (Begin from Unit 2. Expand the scope of the retrieval in stages.) |
During 2021 *4 | |
| Waste measures | Develop technical outlook for treatment and disposal methods and their safety | Around FY2021 | |
| End temporary storage of rubble outdoors | During FY2028 | ||
- *1 Further reduction of generated volume
- *2 Excluding Unit 1 to 3 reactor buildings, Main Process Building, and High-Temperature Incinerator Building
- *3 Adopting a new method for ensuring safety/ anti-scattering
- *4 Reviewing the plan to launch in the late FY2023 due to the impact of pandemic of COVID-19 and to secure safety and ensure reliability of operation
Measures Based on the Mid- to Long-Term Roadmap
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Contaminated Water Measures
Measures to deal with contaminated water, which increases when groundwater flows into reactor buildings or other contamination sources
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Removal of Fuel
Removing fuel from spent fuel pools in the upper part of reactor buildings
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Retrieval of Fuel Debris
Retrieving fuel debris, fuel that has melted down inside the reactors
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Work and Labor Environment
Initiatives toward improving the on-site working environment and labor conditions
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Measures to Deal with Waste Materials
Storing and managing waste materials generated as the decommissioning work proceeds
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Research and Development
Research and development in such areas as use of remote robots for decommissioning work, and bringing together collective expertise
